US Bridges

Quinby Bridge Road over Machipongo River

Fair

Accomack County, Virginia · 2.86 from 13/0.85 to 605 · Structure no. 000000000000357

Built
1988
37 years old
Condition
Fair
inspected June 2024
Type
Slab
Prestressed Concrete
Length
316 ft
7 main spans
Daily traffic
1,092
2022 count
Owner
State
State Highway Agency

About this bridge

Quinby Bridge Road over Machipongo River is a prestressed concrete slab carrying Quinby Bridge Road over Machipongo River in Accomack County, Virginia. It was built in 1988, so it is 37 years old, younger than the Virginia average of 50.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,092 vehicles a day, roughly 1% of them trucks, projected to reach 1,218 by 2042. The structure is 316 ft (96.2 m) long and 30 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesQuinby Bridge Road
CrossesMachipongo River
Location2.86 from 13/0.85 to 605
RouteState Highway 182
CountyAccomack County
StateVirginia
Coordinates37.56464, -75.74297
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating52 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans7
Design loadHS 20 + Mod
Structure length316 ft (96.2 m)
Longest span45 ft (13.7 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,092 (2022)
Projected traffic1,218 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$100 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Quinby Bridge Road over Machipongo River built?

It was built in 1988, making it 37 years old in 2025.

What condition is Quinby Bridge Road over Machipongo River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.

How much traffic does Quinby Bridge Road over Machipongo River carry?

About 1,092 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Quinby Bridge Road over Machipongo River?

The structure is 316 ft (96.2 m) long with a longest span of 45 ft (13.7 m) and a deck 30 ft wide.

Who owns Quinby Bridge Road over Machipongo River?

It is owned by the State Highway Agency.